To those tweeting about the app issues, Uber Support replied: "We're sorry for the trouble. Our team is looking into this and working to resolve ASAP."

According to Down Detector, a website that offers status reports for websites and applications, nearly a thousand users reported problems with the Uber app starting at around 3 p.m. A live outage map shows the app is down for some users in Northern and Southern California, Las Vegas, Phoenix, Denver, Omaha, New York City, Raleigh and Washington D.C.